DE-R 219 Diffractive Optical Element
• Element Number: DE-R 219
• Current Product Revision: A
• Description: Solid Line Circle
• Substrate material: Polymethyl Methacrylate (PMMA)
• Size (Ø x Thickness): 8 x 1 mm
• Design wavelengths: 592 nm
• Recommended wavelength range: 480-600 nm
• Minimum recommended beam diameter: 2-3 mm
Pattern size and pattern angles and the intensity in the undiffracted central spot ('zero order intensity', see reverse page) will vary most with the wavelength. At the optimum wavelength given on this datasheet, the element shows the lowest intensity in the central spot.
Diffraction efficiencies given on this datasheet have been measured using elements of product revision A.
Geometry and Diffraction Angles
Wavelength
Pattern Size @ 100 mm Distance
Pattern Angles
a
α
450 nm
42 mm
21°
515 nm
48 mm
27°
532 nm
50 mm
28°
635 nm
60 mm
34°
650 nm
62 mm
34°
730 nm
70 mm
39°
780 nm
76 mm
42°
808 nm
79 mm
43°
Setup
Laser diodes are the most common light source to be used with diffractive optical elements, but other laser light sources may also be used.
The DOEs are best used with collimated or convergent laser sources. The microstructure surface should be oriented towards the laser.
The 0-order spot is equivalent in size and shape to the original beam, but its power is attenuated.
Diffraction Zero Order Intensity:
Wavelength
0-Order Intensity
450
17.5%
488
9.7%
520
7.1%
594
4.5%
638
7.7%
654
8.6%
687
12.2%
780
20.5%
MOUNTED VERSION
For testing or setups under laboratory conditions we offer a version mounted in 12.7 mm stainless steel frame for use with standard laboratory holders.
COLLIMATED / CONVERGI NG LASER
The laser can be collimated for long range use or converging for a fixed working distance. Please note that the size/thickness of each spot or line depends on the focusing of the laser.
描述 [描述] Design wavelengths: 592 nm